| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2012-09-06 15:16:49 UTC |
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| Update Date | 2022-03-07 02:51:41 UTC |
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| HMDB ID | HMDB0014617 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | Methohexital |
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| Description | Methohexital is only found in individuals that have used or taken this drug. It is an intravenous anesthetic with a short duration of action that may be used for induction of anesthesia. [PubChem]Methohexital binds at a distinct binding site associated with a Cl- ionopore at the GABAA receptor, increasing the duration of time for which the Cl- ionopore is open. The post-synaptic inhibitory effect of GABA in the thalamus is, therefore, prolonged. |
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| Structure | CCC#CC(C)C1(CC=C)C(=O)NC(=O)N(C)C1=O InChI=1S/C14H18N2O3/c1-5-7-8-10(3)14(9-6-2)11(17)15-13(19)16(4)12(14)18/h6,10H,2,5,9H2,1,3-4H3,(H,15,17,19) |
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| Synonyms | | Value | Source |
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| (+-)-5-Allyl-1-methyl-5-(1-methyl-2-pentynyl)barbituric acid | ChEBI | | 5-Allyl-1-methyl-5-(1-methyl-2-pentynyl)-2,4,6(1H,3H,5H)-pyrimidinetrione | ChEBI | | 5-Allyl-1-methyl-5-(1-methyl-pent-2-ynyl)-pyrimidine-2,4,6-trione | ChEBI | | 5-Allyl-5-(3-hexyn-2-yl)-1-methylbarbituric acid | ChEBI | | alpha-DL-1-Methyl-5-allyl-5-(1'-methylpentyn-2-yl)barbituric acid | ChEBI | | Methohexitalum | ChEBI | | Methohexitone | ChEBI | | Metohexital | ChEBI | | (+-)-5-Allyl-1-methyl-5-(1-methyl-2-pentynyl)barbitate | Generator | | (+-)-5-Allyl-1-methyl-5-(1-methyl-2-pentynyl)barbitic acid | Generator | | 5-Allyl-5-(3-hexyn-2-yl)-1-methylbarbitate | Generator | | 5-Allyl-5-(3-hexyn-2-yl)-1-methylbarbitic acid | Generator | | a-DL-1-Methyl-5-allyl-5-(1'-methylpentyn-2-yl)barbitate | Generator | | a-DL-1-Methyl-5-allyl-5-(1'-methylpentyn-2-yl)barbitic acid | Generator | | alpha-DL-1-Methyl-5-allyl-5-(1'-methylpentyn-2-yl)barbitate | Generator | | alpha-DL-1-Methyl-5-allyl-5-(1'-methylpentyn-2-yl)barbitic acid | Generator | | Α-DL-1-methyl-5-allyl-5-(1'-methylpentyn-2-yl)barbitate | Generator | | Α-DL-1-methyl-5-allyl-5-(1'-methylpentyn-2-yl)barbitic acid | Generator | | Methodrexitone | HMDB | | Brevital | MeSH, HMDB | | Sodium, methohexital | MeSH, HMDB | | Brietal | MeSH, HMDB | | Lilly brand OF methohexital sodium | MeSH, HMDB | | Methohexital sodium | MeSH, HMDB | | Brietal-sodium | MeSH, HMDB | | Brevimytal natrium | MeSH, HMDB | | Jones brand OF methohexital sodium | MeSH, HMDB | | Methohexital, monosodium salt | MeSH, HMDB | | Monosodium salt methohexital | MeSH, HMDB | | Natrium, brevimytal | MeSH, HMDB | | Brietal sodium | MeSH, HMDB |
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| Chemical Formula | C14H18N2O3 |
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| Average Molecular Weight | 262.3043 |
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| Monoisotopic Molecular Weight | 262.131742452 |
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| IUPAC Name | 5-(hex-3-yn-2-yl)-1-methyl-5-(prop-2-en-1-yl)-1,3-diazinane-2,4,6-trione |
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| Traditional Name | methohexital |
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| CAS Registry Number | 151-83-7 |
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| SMILES | CCC#CC(C)C1(CC=C)C(=O)NC(=O)N(C)C1=O |
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| InChI Identifier | InChI=1S/C14H18N2O3/c1-5-7-8-10(3)14(9-6-2)11(17)15-13(19)16(4)12(14)18/h6,10H,2,5,9H2,1,3-4H3,(H,15,17,19) |
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| InChI Key | NZXKDOXHBHYTKP-UHFFFAOYSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as barbituric acid derivatives. Barbituric acid derivatives are compounds containing a perhydropyrimidine ring substituted at C-2, -4 and -6 by oxo groups. |
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| Kingdom | Organic compounds |
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| Super Class | Organoheterocyclic compounds |
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| Class | Diazines |
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| Sub Class | Pyrimidines and pyrimidine derivatives |
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| Direct Parent | Barbituric acid derivatives |
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| Alternative Parents | |
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| Substituents | - Barbiturate
- N-acyl urea
- Ureide
- 1,3-diazinane
- Dicarboximide
- Urea
- Carbonic acid derivative
- Carboxylic acid derivative
- Azacycle
- Organic nitrogen compound
- Organonitrogen compound
- Organooxygen compound
- Hydrocarbon derivative
- Organic oxide
- Organopnictogen compound
- Organic oxygen compound
- Carbonyl group
- Aliphatic heteromonocyclic compound
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| Molecular Framework | Aliphatic heteromonocyclic compounds |
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| External Descriptors | |
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| Ontology |
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| Physiological effect | Not Available |
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| Disposition | |
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| Process | Not Available |
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| Role | Not Available |
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| Physical Properties |
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| State | Solid |
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| Experimental Molecular Properties | | Property | Value | Reference |
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| Melting Point | Not Available | Not Available | | Boiling Point | Not Available | Not Available | | Water Solubility | 0.052 g/L | Not Available | | LogP | 1.8 | Not Available |
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| Experimental Chromatographic Properties | Not Available |
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| Predicted Molecular Properties | |
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| Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Retention Times Underivatized| Chromatographic Method | Retention Time | Reference |
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| Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022. | 6.46 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 15.7414 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 2.94 minutes | 32390414 | | AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 24.5 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| Methohexital,1TMS,isomer #1 | C=CCC1(C(C)C#CCC)C(=O)N(C)C(=O)N([Si](C)(C)C)C1=O | 1840.7 | Semi standard non polar | 33892256 | | Methohexital,1TMS,isomer #1 | C=CCC1(C(C)C#CCC)C(=O)N(C)C(=O)N([Si](C)(C)C)C1=O | 2019.1 | Standard non polar | 33892256 | | Methohexital,1TMS,isomer #1 | C=CCC1(C(C)C#CCC)C(=O)N(C)C(=O)N([Si](C)(C)C)C1=O | 2645.9 | Standard polar | 33892256 | | Methohexital,1TBDMS,isomer #1 | C=CCC1(C(C)C#CCC)C(=O)N(C)C(=O)N([Si](C)(C)C(C)(C)C)C1=O | 2071.8 | Semi standard non polar | 33892256 | | Methohexital,1TBDMS,isomer #1 | C=CCC1(C(C)C#CCC)C(=O)N(C)C(=O)N([Si](C)(C)C(C)(C)C)C1=O | 2253.7 | Standard non polar | 33892256 | | Methohexital,1TBDMS,isomer #1 | C=CCC1(C(C)C#CCC)C(=O)N(C)C(=O)N([Si](C)(C)C(C)(C)C)C1=O | 2712.7 | Standard polar | 33892256 |
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| GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted GC-MS | Predicted GC-MS Spectrum - Methohexital GC-MS (Non-derivatized) - 70eV, Positive | splash10-001j-4390000000-8c577a429e1b4575b629 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Methohexital GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Methohexital GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Methohexital GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | | MS | Mass Spectrum (Electron Ionization) | splash10-0fbc-9520000000-5141cdceea7f6d5013b0 | 2014-09-20 | Not Available | View Spectrum |
MS/MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Experimental LC-MS/MS | LC-MS/MS Spectrum - Methohexital 35V, Positive-QTOF | splash10-00ya-3900000000-577a972e968dc27cf6a6 | 2021-09-20 | HMDB team, MONA | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 10V, Positive-QTOF | splash10-03di-2090000000-43730b3bde391b731ebe | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 20V, Positive-QTOF | splash10-00dl-3970000000-fc9a91490da8afc576f0 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 40V, Positive-QTOF | splash10-0f9x-9000000000-93587b41eae6b9864e81 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 10V, Negative-QTOF | splash10-001i-2920000000-ad50a444d0a4a9a5af2c | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 20V, Negative-QTOF | splash10-0a4l-4910000000-c5dc261173ac7024e26f | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 40V, Negative-QTOF | splash10-0006-9200000000-7cedeac5d5e1a5954aa4 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 10V, Negative-QTOF | splash10-03di-0090000000-c3de47045d3b9ea5dd1f | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 20V, Negative-QTOF | splash10-03dl-4890000000-e57232418c552e436a95 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 40V, Negative-QTOF | splash10-015c-3910000000-34338787c291ec35bb4c | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 10V, Positive-QTOF | splash10-03di-0190000000-859e807fb540e8aaf091 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 20V, Positive-QTOF | splash10-053r-0910000000-70fde9c253e18d448791 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methohexital 40V, Positive-QTOF | splash10-0udi-9300000000-67ceed0497570d0689e3 | 2021-09-22 | Wishart Lab | View Spectrum |
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